HVAC-Talk site will be slow for the next few days. It's normal site/server maintenance. Thx -Dad

Welcome to HVAC-Talk.com, a non-DIY site and the ultimate Source for HVAC Information & Knowledge Sharing for the industry professional! Here you can join over 150,000 HVAC Professionals & enthusiasts from around the world discussing all things related to HVAC/R. You are currently viewing as a NON-REGISTERED guest which gives you limited access to view discussions

To gain full access to our forums you must register; for a free account. As a registered Guest you will be able to:

Participate in over 40 different forums and search/browse from nearly 3 million posts.

From what you describe, i think i have the exact same problem. I would be very appreciative to hear the diagnosis of your system. thanks

This has been awhile but the final resolution was that Trane mis-speced the coil for this heat pump. It was too small. They exchanged the coil to one with slightly larger diameter coil lines. It has been running well for the about 18 months both heating and cooling. Very very infrequently I hear a pressure valve give on the outdoor unit, hissing and the pipes vibrate.

Hope that helps. If you need the exact model of the new coil I can dig it up.